text: /*
   * This file is part of the Micro Python project, http://micropython.org/
   *
   * Original template for this file comes from:
   * Low level disk I/O module skeleton for FatFs, (C)ChaN, 2013
   *
   * The MIT License (MIT)
   *
   * Copyright (c) 2013, 2014 Damien P. George
   *
   * Permission is hereby granted, free of charge, to any person obtaining a copy
   * of this software and associated documentation files (the "Software"), to deal
   * in the Software without restriction, including without limitation the rights
   * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   * copies of the Software, and to permit persons to whom the Software is
   * furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in
   * all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
   * THE SOFTWARE.
   */
  
  #include <stdint.h>
  #include <stdio.h>
  
  #include "stm32f4xx_hal.h"
  
  #include "misc.h"
  #include "mpconfig.h"
  #include "qstr.h"
  #include "obj.h"
  #include "systick.h"
  #include "rtc.h"
  #include "storage.h"
  #include "sdcard.h"
  #include "ff.h"        /* FatFs lower layer API */
  #include "diskio.h"        /* FatFs lower layer API */
  
  const PARTITION VolToPart[] = {
      {0, 1},     // Logical drive 0 ==> Physical drive 0, 1st partition
      {1, 0},     // Logical drive 1 ==> Physical drive 1 (auto detection)
      /*
      {0, 2},     // Logical drive 2 ==> Physical drive 0, 2nd partition
      {0, 3},     // Logical drive 3 ==> Physical drive 0, 3rd partition
      */
  };
  
  /* Definitions of physical drive number for each media */
  #define PD_FLASH (0)
  #define PD_SDCARD (1)
  
  /*-----------------------------------------------------------------------*/
  /* Initialize a Drive                                                    */
  /*-----------------------------------------------------------------------*/
  
  DSTATUS disk_initialize (
      BYTE pdrv                /* Physical drive nmuber (0..) */
  )
  {
      switch (pdrv) {
          case PD_FLASH:
              storage_init();
              return 0;
  
  #if MICROPY_HW_HAS_SDCARD
          case PD_SDCARD:
              if (!sdcard_power_on()) {
                  return STA_NODISK;
              }
              // TODO return STA_PROTECT if SD card is read only
              return 0;
  #endif
      }
  
      return STA_NOINIT;
  }
  
  /*-----------------------------------------------------------------------*/
  /* Get Disk Status                                                       */
  /*-----------------------------------------------------------------------*/
  
  DSTATUS disk_status (
      BYTE pdrv        /* Physical drive nmuber (0..) */
  )
  {
      switch (pdrv) {
          case PD_FLASH :
              // flash is ready
              return 0;
  
  #if MICROPY_HW_HAS_SDCARD
          case PD_SDCARD:
              // TODO return STA_PROTECT if SD card is read only
              return 0;
  #endif
      }
  
      return STA_NOINIT;
  }
  
  /*-----------------------------------------------------------------------*/
  /* Read Sector(s)                                                        */
  /*-----------------------------------------------------------------------*/
  
  DRESULT disk_read (
      BYTE pdrv,        /* Physical drive nmuber (0..) */
      BYTE *buff,        /* Data buffer to store read data */
      DWORD sector,    /* Sector address (LBA) */
      UINT count        /* Number of sectors to read (1..128) */
  )
  {
      switch (pdrv) {
          case PD_FLASH:
              for (int i = 0; i < count; i++) {
                  if (!storage_read_block(buff + i * FLASH_BLOCK_SIZE, sector + i)) {
                      return RES_ERROR;
                  }
              }
              return RES_OK;
  
  #if MICROPY_HW_HAS_SDCARD
          case PD_SDCARD:
              if (!sdcard_read_blocks(buff, sector, count)) {
                  return RES_ERROR;
              }
              return RES_OK;
  #endif
      }
  
      return RES_PARERR;
  }
  
  /*-----------------------------------------------------------------------*/
  /* Write Sector(s)                                                       */
  /*-----------------------------------------------------------------------*/
  
  #if _USE_WRITE
  DRESULT disk_write (
      BYTE pdrv,            /* Physical drive nmuber (0..) */
      const BYTE *buff,    /* Data to be written */
      DWORD sector,        /* Sector address (LBA) */
      UINT count            /* Number of sectors to write (1..128) */
  )
  {
      switch (pdrv) {
          case PD_FLASH:
              for (int i = 0; i < count; i++) {
                  if (!storage_write_block(buff + i * FLASH_BLOCK_SIZE, sector + i)) {
                      return RES_ERROR;
                  }
              }
              return RES_OK;
  
  #if MICROPY_HW_HAS_SDCARD
          case PD_SDCARD:
              if (!sdcard_write_blocks(buff, sector, count)) {
                  return RES_ERROR;
              }
              return RES_OK;
  #endif
      }
  
      return RES_PARERR;
  }
  #endif
  
  
  /*-----------------------------------------------------------------------*/
  /* Miscellaneous Functions                                               */
  /*-----------------------------------------------------------------------*/
  
  #if _USE_IOCTL
  DRESULT disk_ioctl (
      BYTE pdrv,        /* Physical drive nmuber (0..) */
      BYTE cmd,        /* Control code */
      void *buff        /* Buffer to send/receive control data */
  )
  {
      switch (pdrv) {
          case PD_FLASH:
              switch (cmd) {
                  case CTRL_SYNC:
                      storage_flush();
                      return RES_OK;
  
                  case GET_BLOCK_SIZE:
                      *((DWORD*)buff) = 1; // high-level sector erase size in units of the small (512) block size
                      return RES_OK;
              }
              break;
  
  #if MICROPY_HW_HAS_SDCARD
          case PD_SDCARD:
              switch (cmd) {
                  case CTRL_SYNC:
                      return RES_OK;
  
                  case GET_BLOCK_SIZE:
                      *((DWORD*)buff) = 1; // high-level sector erase size in units of the small (512) block size
                      return RES_OK;
              }
              break;
  #endif
      }
  
      return RES_PARERR;
  }
  #endif
  
  DWORD get_fattime (
      void
  )
  {
      RTC_TimeTypeDef time;
      RTC_DateTypeDef date;
      HAL_RTC_GetTime(&RTCHandle, &time, FORMAT_BIN);
      HAL_RTC_GetDate(&RTCHandle, &date, FORMAT_BIN);
      return ((2000 + date.Year - 1980) << 25) | ((date.Month) << 21) | ((date.Date) << 16) | ((time.Hours) << 11) | ((time.Minutes) << 5) | (time.Seconds / 2);
  }
  